(A) 1, 2, 3; 4, 5, 6; 7, 8, 9
(B) 1, 3, 5; 2, 4, 6; 7, 8, 9
(C) 1, 5, 9; 3, 6, 2; 4, 7, 8
(D) 1, 9, 7; 2, 8, 5; 3, 4, 6
(A) M
(B) N
(C) E
(D) A
3 times of _____. A B C D